Cisco Discovery 3 Certification Prep Quiz

In VTP Transparent mode, a switch can create VLANs locally and does not participate in VTP advertisements, therefore not passing local VLAN information to other VTP domain members.

Extended ACLs allow for the specification of various TCP/IP protocols and offer flexibility in filtering based on source and destination addresses, protocols, and specific port numbers, not limited to just TCP traffic or source address only.

LCP (Link Control Protocol) is responsible for testing the quality of the link and managing compression. NCP (Network Control Protocol) allows multiple network layer protocols to be configured over the PPP link. CHAP authentication ensures secure password exchange, not plain text passwords.

The correct subnet for the given IP route is 172.16.64.0/20, which includes the range from 172.16.64.1 to 172.16.79.254. Therefore, the correct answer is that all packets within this range will be forwarded out serial0/0.

In the exhibit, the output of the show ip ospf neighbor command indicates that router RA has established adjacencies with all neighbor routers, making it the correct statement. RB having the lowest priority value, RC and RD having the lowest router IDs, and RA and RB being stuck in the 2-way state are all incorrect statements based on the information provided in the exhibit.

A Virtual Private Network (VPN) provides a secure way for the sales representative to access the Internet from the hotel room and transmit sensitive information to the corporate headquarters. Frame Relay is not typically used for secure Internet access. PPP with CHAP authentication and PPP with PAP authentication are authentication protocols used for point-to-point connections, but they do not provide the same level of security as a VPN.

In VTP (VLAN Trunking Protocol), a network device configured in transparent mode does not participate in VTP updates, which means VLAN changes made on other devices will not automatically propagate to a device in transparent mode. This explains why the VLAN configuration changes at SW2 did not propagate to SW3.

Spanning Tree Protocol (STP) selects a root bridge based on the bridge priority and the base MAC address of the switches. The bridge priority is a configurable value that helps determine which switch becomes the root bridge. The base MAC address is used as a tiebreaker if there are multiple switches with the same bridge priority.

For a Class B IP address (e.g., 172.16.0.0 to 172.31.255.255), the subnet mask 255.255.255.0 provides 256 possible networks (0-255) which is more than enough for the expected 150 networks. The other subnet masks mentioned do not offer sufficient network range for the requirement.

In EIGRP, the reported distance of the feasible successor is the metric recorded from the neighbor that is not the successor but satisfies the feasibility condition to potentially become a backup route. The feasible distance is the metric calculated by adding the local metric to the reported distance of the feasible successor. Therefore, in this context, the correct term to describe the value 2172416 is the reported distance of the feasible successor.

Router R2 is the correct choice to add the necessary commands for providing Internet access to all hosts in the network because it acts as the gateway connecting the internal network to the Internet. R1 and R3 are internal routers within the network, while ISP is the external Internet Service Provider and not a router within the network.

Services performed at the enterprise edge primarily aim to strengthen security against potential malicious attacks, ensuring data protection and safeguarding company resources.

Placing the ACL on R1's S0/1/0 outbound interface would allow the network administrator to deny Internet access to R2 LAN hosts while still allowing them to reach all other devices on the company networks. The other placements would not achieve the desired result.

When an OSPF router is selecting the DR, it checks the parameters in the sequence C, B, A, D.

In EIGRP, the successor route is the best route to reach a specific destination and is stored only in the routing table. The routing table also provides information on the time elapsed since a router adjacency was formed. The topology table shows feasible successors, not whether a route is in passive or active state. The neighbor table does list adjacent devices but does not show administrative distance.

RSTP and STP have different number of port states, RSTP is an open standard protocol, and RSTP converges much faster than 50 seconds making the incorrect options.

In this scenario, incorrect IP address assignment to the serial 0/0/0 interface could lead to communication failure between LAN hosts and the Internet. The other incorrect answers are not related to the specific issue of IP address misconfiguration on the serial interface.

The correct answer is 'incorrect subnet mask on R2'. When the subnet mask on R2 is incorrect, it can lead to communication issues between the two interfaces, even if Layer 2 connectivity is present. The other incorrect options do not directly address the subnet mask issue that could be causing the problem.

MD5 authentication in OSPF uses the key to generate a hash value, which is used for authentication. The actual key is never sent between routers, but the hash value is exchanged. Additionally, the key is not passed in plain text or encrypted form between routers. Even though the key is not directly transmitted, it is possible for an attacker to capture the hash value and potentially use a packet sniffer to intercept it.

When router RTA fails, communication is cut off between hosts A and B with hosts C and D, as well as the server. This leads to only hosts A and B being able to communicate with each other, but not with the other hosts or the server.

The correct command to disable default summarization in an EIGRP network is 'Router(config-router)# no auto-summary'. This command is used to prevent EIGRP from automatically summarizing routes at network boundaries. The other options provided are not the correct commands for this purpose.

The incorrect answers provided do not address the issues identified in the correct answer. The routing loop, OSPF Area configuration, and subnet mask validity are not relevant to the specific problems mentioned in the context of the question.

The correct IP addressing scheme for the network is where H1 is on subnet 172.18.0.0/16, H2 is on subnet 172.19.0.0/16, and H3 is on subnet 172.18.0.0/16. This ensures that each host is on a separate subnet within the same Class B network address (172.18.0.0/16).

For a /30 subnet, the usable host IP addresses are 192.168.13.5 and 192.168.13.6. Since 192.168.13.6 is already assigned to the existing router, the next available IP address would be 192.168.13.5 for the new router.

The correct steps to simplify administration and control unwanted traffic are defining an ACL at the distribution layer to isolate packets and adding an ACL at the router in the enterprise edge to block the traffic. Using a Layer 3 switch to contain broadcasts, connecting remote locations directly to the intranet, and configuring all hosts with the same default gateway do not directly address or control the specific unwanted traffic issue identified in the question.